Keep down

The dictatorial state keeps down its dissidents very efficiently.

Now here you go again, you say you want your freedom / Well, who am I to keep you down? / It's only right that you should play the way you feel it / But listen carefully to the sound of your loneliness

We must keep the noise down, or the neighbours will complain.

Keep it down in there! Some of us are trying to sleep!

It is essential to keep the numbers down to avoid overcrowding.

It is difficult to keep anything down when you have the flu.

You had better keep down or they will see you.